organic psychosis
Low (C2)Formal, Technical (medical, psychiatric, clinical psychology)
Definition
Meaning
A severe mental disorder, involving a loss of contact with reality (psychosis), caused by a known physical illness or brain injury, rather than a purely psychological or functional cause.
Any psychotic condition with a clear, identifiable biological basis, such as a brain tumour, infection, stroke, degenerative disease, or toxic/metabolic disturbance, leading to symptoms like hallucinations, delusions, and disorganized thinking.
Linguistics
Semantic Notes
The term is now somewhat dated in modern clinical psychiatry. Contemporary diagnostic systems (DSM-5, ICD-11) use more specific categories like 'psychotic disorder due to another medical condition' or 'delirium'. It historically served to distinguish it from 'functional psychosis' (e.g., schizophrenia) where no clear organic cause was identified at the time.
Dialectal Variation
British vs American Usage
Differences
Minimal. The term is used identically in professional medical contexts in both varieties. No spelling differences.
Connotations
Identical technical, clinical connotation.
Frequency
Equally low and specialized in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
Patient + present with + organic psychosisOrganic psychosis + caused by + [disease/injury]To rule out + organic psychosisVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Not used.
Academic
Used in medical/psychiatric history, textbooks, and differential diagnosis discussions.
Everyday
Extremely rare. Would likely be paraphrased (e.g., 'a mental breakdown caused by a physical problem').
Technical
Core usage. Found in psychiatric evaluations, neurology reports, and clinical case conferences.
Examples
By Part of Speech
adjective
British English
- The consultant suspected an organic psychosis aetiology.
American English
- The team considered an organic psychosis diagnosis.
Examples
By CEFR Level
- The sudden hallucinations were caused by an infection, resulting in what doctors called an organic psychosis.
- Before diagnosing schizophrenia, doctors must rule out organic psychosis.
- The patient's presentation of florid psychosis, coupled with abnormal neurological signs, pointed decisively towards an underlying organic psychosis.
- Historically, the organic/functional dichotomy was central to psychiatric classification, with conditions like general paresis serving as the classic model for organic psychosis.
Learning
Memory Aids
Mnemonic
Think: 'ORGANic' = a problem with the body's physical organs (brain) causing a PSYCHosis (mind break).
Conceptual Metaphor
THE MIND AS AFFECTED BY THE MACHINE (the brain as a physical machine whose breakdown distorts mental software).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'органический психоз' in everyday contexts; it's a highly specialized term. The Russian phrase is also technical. Do not confuse with 'органический' meaning 'related to farming'.
Common Mistakes
- Using it interchangeably with 'psychosis' or 'schizophrenia'. Confusing 'organic' with its meaning 'natural, chemical-free'. Pronouncing 'psychosis' with a hard /p/ (incorrect: /paɪ-/).
Practice
Quiz
What is the key distinguishing feature of an organic psychosis?
FAQ
Frequently Asked Questions
Dementia involves cognitive decline, but psychotic symptoms (like delusions) can occur. In such cases, those specific psychotic features can be described as part of an organic psychotic process, though 'dementia with psychotic features' is the preferred modern term.
Yes, intoxication or withdrawal from substances (like amphetamines or alcohol) can cause a temporary psychotic state with a clear physical/chemical cause. This is often categorized separately as 'substance-induced psychotic disorder'.
The historical opposite is 'functional psychosis', where no gross brain disease or injury could be found. Schizophrenia and some forms of bipolar disorder were traditionally considered functional psychoses, though biological bases are now understood.
Almost never. It is a highly technical medical term. In everyday language, people would describe the situation, e.g., 'He became mentally ill because of a brain injury'.